*{
    margin: 0px;
    padding: 0px;
}
ul{
    list-style-type: none;
}
.box{
    width: 789px;
    height: auto;
    margin: 0 auto;
}
.list-box{
    margin: 0 auto;
    width: 800px;
    height: 42px;
    border-bottom: 1px solid rgb(216, 210, 210);
}
.list{
    float:right;
padding-top: 10px;
}
.list-box ul li{
    cursor: pointer;
    width: 30px;
    height: 29px;
    float: left;
    display: block;
    background: url(liebiao.png);
    background-size: 79px no-repeat;
}
.changelist .list-1-o{
    height: 266px;
    width: 160px;
    border: 1px solid #aaa;
    float: left;
    margin-left: 20px;
    margin-bottom: 20px;
}
.changelist .list-2-v{
    height: 266px;
}